Airfield light

ABSTRACT

An airfield light, components thereof, and associated methods. The airfield light can include a baffle including a baffle body and one or more baffle members secured to the baffle body. The baffle members are configured to cover portions of a baffle window. At least one light source is mounted in association with the baffle and emits light out of the baffle window. The baffle members cover portions of the baffle window for blocking light transmission therethrough. A method of assembling an airfield light includes arranging a baffle to shroud a light assembly and removing a baffle member to permit light from the light assembly to emit through a portion of a baffle window opened by removing the baffle member. A baffle for an airfield light is also disclosed.

CROSS-REFERENCE TO RELATED APPLICATION

The present application claims the benefit of U.S. ProvisionalApplication No. 62/503,717, filed May 9, 2017, the entirety of which ishereby incorporated by reference.

FIELD OF THE DISCLOSURE

The present disclosure generally relates to lights, and morespecifically airfield lights such as lights used along runways ortaxiways.

BACKGROUND OF THE DISCLOSURE

Airfield lights are used for various purposes, such as to indicate toairfield personnel and pilot boundaries and/or intended directions oftravel along runways and/or taxiways.

SUMMARY OF THE DISCLOSURE

In one aspect, an airfield light includes a heat sink and a first lightmodule secured to the heat sink. A baffle includes a generally opaquebaffle body defining a window having a first open portion through whichlight emitted from the first light modules may pass. A generally opaquebaffle member is secured to the baffle body and blocks a closed portionof window to inhibit light emitted from the first light module frompassing therethrough. The generally opaque baffle member is removablefrom the baffle body to create a second open portion of the window.

In another aspect, a method of assembling an airfield light includesmounting first and second light assemblies on a heat sink. The methodincludes removing at least a first generally opaque baffle member from abaffle body of a baffle. The baffle is arranged to shroud the first andsecond light assemblies. The first and second light assemblies areconfigured to emit light through a window defined by the baffle. Thesecond light assembly is configured to emit light through a portion ofthe window opened by removing the first generally opaque baffle memberfrom the baffle body.

In yet another aspect, a baffle for an airfield light includes agenerally opaque shroud defining a window. The baffle includes a firstgenerally opaque baffle member secured to the shroud. The firstgenerally opaque baffle member closes a first portion of the window. Thefirst generally opaque baffle member is removable from the shroud foropening the first portion of the window.

Other objects and features of the present disclosure will be in partapparent and in part pointed out herein.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a front perspective of a light of an airfield light of thepresent disclosure;

FIG. 2 is an exploded front perspective of an upper portion of theairfield light of FIG. 1;

FIG. 3 is a front perspective of a first light assembly of the airfieldlight of FIG. 1;

FIG. 4 is a rear perspective of the first light assembly of FIG. 3;

FIG. 5 is an exploded front perspective of the first light assembly;

FIG. 6 is an exploded rear perspective of the first light assembly;

FIG. 7 is an exploded front perspective of a light module of the lightassembly;

FIG. 8 is a section of the light module taken in the plane includingline 8-8 shown in FIG. 6;

FIG. 9 is a front perspective of a second embodiment of a light assemblyof the present disclosure;

FIG. 10 is a rear perspective of the light assembly of FIG. 9;

FIG. 11 is a front perspective of the light assembly of FIG. 9 having abaffle removed;

FIG. 12 is a front perspective of a heat sink of the light assembly ofFIG. 9;

FIG. 13 is a rear perspective of the heat sink having a portion brokenaway to show fastener passages in the heat sink;

FIG. 14 is a rear perspective of the light assembly of FIG. 9 and aplatform for mounting the light assembly;

FIG. 15 is a top view of the light assembly mounted on the platform;

FIG. 16 is a front perspective of a third embodiment of a light assemblyof the present disclosure;

FIG. 17 is a rear perspective of the light assembly of FIG. 16; and

FIG. 18 is an exploded rear perspective of a baffle of the lightassembly of FIG. 16.

DETAILED DESCRIPTION

Referring to FIG. 1, an embodiment of an airfield light is generallyindicated at reference number 10. The airfield light can be used forvarious purposes. For example, several of the airfield lights 10 may bepositioned one after another along a runway for indicating boundaries,intended direction of travel, and/or distance to the end of the runway,etc. As will be described in further detail below, the light 10 has amodular design permitting the light to be configured during manufactureto meet a variety of lighting needs.

The illustrated embodiment of the light 10 is an elevated airfield light(e.g., a high intensity runway light) including a head 12 and a stem 14.The stem 14 includes a post 16, such as a pipe, for elevating the head12. A threaded connector 18 is provided at a lower end of the stem 14for mounting the light 10 on a suitable base. A frangible coupling 20connects the post 16 to the connector 18. The head 12 includes first andsecond (front and rear) light assemblies 22A, 22B, a base 26, a collar28, and a cover 30 for covering the light assemblies 22A, 22B. Asexplained in more detail below, the first light assembly 22A isconfigured to emit light of a selected first color generally in a firstdirection (e.g., forward), and the second light assembly 22B isconfigured to emit light of a selected second color in a seconddirection (e.g., rearward), which may be generally opposite the firstdirection. The first and second colors may be the same color or may bedifferent colors.

Referring to FIG. 2, the cover 30 is generally colorless, although itmay be colored and/or tinted. The cover 30 has a generally dome shapeincluding a rounded top portion, a first (front) truncated portion 30A(i.e., first planar portion) generally opposing the first light assembly22A through which light emitted from the first light assembly istransmitted, and a second (rear) truncated portion 30B (i.e., secondplanar portion) generally opposing the second light assembly 22B throughwhich light emitted from the second light assembly is transmitted. Theinterior and exterior surfaces of the first and second truncatedportions 30A, 30B are generally planar and parallel to each other. Thecover 30 partially reflects light emitted from the first and secondlight assemblies 22A, 22B to create a halo effect, whereby the firstlight is transmitted through a first (front) half of the cover includinga first (front) half of the rounded top portion of the cover, and thesecond light is transmitted through a second (rear) half of the coverincluding a second (rear) half of the rounded top portion. In this way,light emitted by the airfield light 10 is visible by pilots flying abovethe airfield. The cover 30 may comprise plastic, glass or anothersuitable light-transmissible material.

Referring still to FIG. 2, the base 26 includes a housing 32 defining acavity, a platform 34 disposed over an open upper end of the housing,and the collar 28 secured (e.g., by fasteners 36) to a flange 32A of thehousing 32. Electronics and/or electrical components 38 for operatingthe light assemblies are positioned in the housing 26 and areelectrically connected to the light assemblies 22A, 22B (e.g., bysuitable cables or wiring). The light assemblies 22A, 22B are mounted onthe platform 34, as explained in more detail below. In FIG. 2, a gasket34A is shown on an upper end of the platform 34. In assembly, a lowerflange 30C of the cover 30 is sandwiched between the platform 34 (below)and the gasket 34A (above). The collar 28 secures the cover 30 to thebase 26 by clamping the gasket 34A and flange 30C of the cover betweenthe collar and the platform 34. The gasket 34A inhibits ingress ofliquid and debris into the light 10 to protect the light assemblies 22A,22B, electronics and/or electrical components 38. A lower end of thehousing 26 is mounted on an upper end of the stem 14. Cables or wiringfrom the electronics and/or electrical components 38 in the housing 26are fed through the stem 14 and out a lower end of the stem. The base 26and stem 14 may be formed from metal (e.g., cast aluminum) or othersuitable material.

With reference to FIGS. 3-6, the first (front) light assembly 22A willbe described in further detail with the understanding that the second(rear) light assembly 22B can be essentially the same as the front lightassembly or different, depending on the desired construction of thelight 10 and the particular need for front and rear lighting (e.g.,intensity of light and/or color of light). In the embodiment shown inFIGS. 1 and 2, the second (rear) light assembly 22B has a slightlydifferent construction, as described in further detail below withreference to FIGS. 16-18, but the two light assemblies 22A, 22B can havethe same or similar construction. As will be understood, the front andrear light assemblies 22A, 22B may emit different colors of light, andit may be desirable to prevent light of a first color from the firstlight assembly from emitting in the second direction (e.g., rearward),and likewise may be desirable to prevent light of a second colordifferent than the first color from the second light assembly fromemitting in the first direction (e.g., forward). In one instance, lightof a first color indicates (e.g., to an airplane pilot) travel in thatdirection is permitted, and light of a second different color indicatestravel in that direction is not permitted. In other words, the directionof travel is one way, in a direction toward the light of the first coloremitted from the first light assemblies 22A. However, otherconfigurations can be used (e.g., the same color can be emitted from thefront and rear light assemblies).

As shown in FIG. 3, the light assembly 22A generally includes a support40, at least one illuminator (e.g., a directional LED module 42, and twohalo LED modules 44), and a baffle 46. Although three illuminators 42,44 are shown, other numbers can be used, such as at least one, two,three, four, five, etc. In the illustrated embodiment, the illuminators42, 44 are LED modules (i.e., LED assemblies or LED illuminators), andthe support 40 is a heat sink. The heat sink 40 can be formed of asuitable thermally conductive and heat-dissipating material, such asmetal (e.g., cast aluminum). The illustrated heat sink 40 includes twofront LED module mounting surfaces 48 (FIG. 5) and an upper LED modulemounting surface 50 (FIG. 5). The two halo LED modules 44 are mounted(e.g., by suitable fasteners 52 (FIG. 5)) on the front LED modulemounting surfaces 48. The directional LED module 42 (e.g., highintensity LED module) is mounted on the upper LED module mountingsurface 50.

As shown in FIG. 5, the heat sink 40 includes first and second oppositecolumns 54 and a wall 56 extending between the columns. The heat sink 40includes left and right flanges 58, a front flange 60 having respectiveopenings 62, 64 therein, and a downwardly extending protrusion 66 (FIG.6) for mounting the heat sink on the platform 34, as described furtherbelow. The columns 54 are generally upright, and openings 68 areprovided in heads of the columns for receiving fasteners, as describedbelow. The upper LED module mounting surface 50 is provided on the topof the wall 56 and extends between the columns 54. Referring to FIG. 6,the LED module mounting surface 50 has two outer fastener openings 70and two inner alignment openings 71 for mounting the LED module 42thereon. The LED module mounting surface 50 is inclined with respect tohorizontal. More specifically, the LED module mounting surface 50 isinclined upward from rear to front for mounting the LED module 42 in adesired orientation, described in further detail below. As shown in FIG.5, the two front LED module mounting surfaces 48 are provided on frontsurfaces of the columns 54. The left front LED module mounting surface48 faces forward and to the left, and the right front LED modulemounting surface 48 faces forward and to the right. Fastener openings 72are provided in the front LED module mounting surfaces 48 for mountingthe halo LED modules 44 thereon.

As shown in FIGS. 5-8, the directional LED module 42 includes a supportor board 76 (e.g., printed circuit board or PCB), a reflector 78, andthree LEDs 80 (broadly, “light sources” or “light emitting components”).Desirably, the three LEDs 80 are configured to emit the same color, butdifferent colors could be used. The LED module 42 also includes anelectrical connector 82 for providing power and/or control signals tothe LED module from the electronics and/or electrical components 38 inthe housing 32. The reflector 78, the LEDs 80, and the connector 82 aremounted on the board 76. The board 76 is configured for transmitting thepower and/or control signals from the connector 82 to the LEDs 80. Inother words, the LEDs 80 are electrically connected to the connector 82via the board 76.

The reflector 78 includes a housing portion 84 and a mounting portion86. The mounting portion 86 is configured to mount the reflector 78 onthe board 76. In the illustrated embodiment, the mounting portion 86includes two fastener openings 88 sized and shaped for receivingfasteners 90 (e.g., bolts or screws) (FIG. 9). As shown in FIG. 7, theboard 76 includes corresponding openings 92 for receiving the fasteners90. The mounting portion 86 also includes two protrusions 94 (e.g.,alignment studs or alignment pins) extending downward for reception incorresponding openings 96 in the board 76. In manufacture, the fasteners90 and protrusions 94 are further received in the respective openings70, 71 (FIG. 6) in the LED module mounting surface 50 for mounting theLED module 42 on the heat sink 40. As shown in FIG. 7, the housingportion 84 of the reflector 78 includes three inner reflector surfaces98 corresponding to respective ones of the LEDs 80. The reflectorsurfaces 98 bound corresponding LED spaces in which the LEDs 80 arepositioned and emit light. The reflector surfaces 98 are generallyconcave and rounded. In the illustrated embodiment, the three LED spacesare connected to each other such that light can pass from one LED spaceto another, but the LED spaces can be isolated or spaced from oneanother. The reflector surfaces 98 are configured for reflecting lightemitted from the LEDs 80 generally forward. Referring to FIG. 8, thereflector surfaces 98 have a cross-sectional shape resembling about halfof a parabola, but other shapes could be used. Each LED 80 is positionedapproximately at the focus of the parabolic shape. As shown in FIG. 8,when the LED module 42 is mounted on the heat sink 40, the board 76 isinclined at an angle A with respect to horizontal. For example, theangle A may be in the inclusive range of about 10 degrees to about 40degrees, the inclusive range of about 15 degrees to about 35 degrees, orthe inclusive range from about 20 degrees to about 30 degrees. Forexample, the angle A may be about 25 degrees. The arrangement is suchthat the reflector surfaces 98 are configured to reflect the lightgenerally forward to be viewed from in front of the light assembly 22A.The LED module 42 can have other configurations, such as other numbersof LEDs (e.g., at least one, two, three, four, five, etc.) and otherconfigurations of boards, baffles, and connectors. Light sources otherthan LEDs, such as other light emitting elements can be used. Moreover,components of the LED module 42 can be omitted.

The halo LED modules 44 include a support or board 102 (e.g., printedcircuit board or PCB), a halo lens 104, and an LED (broadly, “lightsource” or “light emitting element”) mounted on the board behind thehalo lens. The halo LED modules 44 also include electrical connectors106 for forming electrical connections with the halo LED modules (e.g.,for power supply and/or control signals). The board 102 electricallyconnects the LED with the electrical connectors 106. The halo lens 104includes openings 108 for receiving fasteners 52 (FIG. 5) for mountingthe lens 104 on the board 102 and for mounting the halo LED module 44 onthe heat sink 40 via openings 72 (FIG. 5) in a respective column 54 atthe halo LED module mounting surfaces 48.

As shown in FIGS. 3-6, the baffle 46 generally includes a generallyopaque baffle body (e.g., shroud 110) and at least one generally opaqueremovable baffle member 112. In the illustrated embodiment, there aretwo removable baffle members 112, and they are formed as one piece withthe shroud 110 (e.g., injection molded plastic). The baffle members 112are removable from the shroud 110 by breaking frangible connecting links114 at perimeters of the removable baffle members. The removable bafflemembers 112 include main bodies forming generally upright partitions orwalls connected to the shroud by the frangible connections and includebaffle elements 116 in the form of generally horizontal partitions orwalls extending rearward from rear surfaces of the main bodies. Theshroud 110 defines a front window having a lower portion, anintermediate portion, and an upper portion. The intermediate and upperportions of the window are covered by the removable baffle members 112,and the lower window portion is open. As will become apparent, one orboth of the removable baffle members 112 can be removed if desired toprovide another directional LED module 42 for emitting light through theintermediate and/or the upper portions of the window. In the illustratedembodiment, the lower, intermediate, and upper portions of the windoware not separated from one another, but separating structure could beprovided (e.g., a segmented window). The baffle 46 includes legs 120extending down from the shroud 110 and arms 122 extending inwardlaterally from the legs. The arms 122 are configured to extend behindthe heat sink 40 and include respective fastener openings 124 foroptionally receiving fasteners therein for securing the baffle to theheat sink. The legs 120 include feet 126 having protrusions 128 (e.g.,studs or pins) extending downward therefrom for reasons explained later(alignment). The legs 120 include openings 130 through which electricalwires or cables may be run to the LED modules (e.g., to the halo LEDmodules 44). The baffle 46 can be made of any suitable material, such asplastic. The shroud 110, removable baffle members 112, legs 120, and/orarms 122 desirably have the same color as the LED modules 42, 44 areconfigured to emit. Thus, during the day, when the LED modules 42, 44may not be energized, the baffle 46 is visible in daylight and can serveto indicate the selected color.

It will be appreciated that the baffle 46 is configured to permit lightfrom the LED modules 42, 44 to emit generally forward from the lightassembly 22A but inhibit light from the LED modules from emittinggenerally rearward, toward the second (rear) light assembly 22B. Thebaffle 46 is also configured to inhibit light from the second (rear)light assembly 22B from emitting generally forward toward the first(front) light assembly 22A. The arrangement is such that the head 12 isconfigured for emitting light generally forward from the first lightassembly 22A and emitting light generally rearward from the second lightassembly 22B. The general shape and size of the shroud 110 is chosen tosubstantially fill the front half of the cover 30 to create a partitionto inhibit forward emission of light from the second (rear) lightassembly 22B. Likewise, the shroud 110 generally inhibits lightreflecting off the front side of the cover 30 from emitting rearwardpast the shroud 110. In addition, as shown in FIGS. 4 and 6, the baffleelements 116 of the removable baffle members 112 assist in inhibitinglight from passing into or out of the interior of the shroud 110 overthe top of the directional LED module 42. The baffle element 116 of thelower removable baffle member 112 forms a hood over the directional LEDmodule 42 to block light transmission over the top of the directionalLED module.

In one aspect of the airfield light 10 of the present disclosure, amodular design is used to permit manufacture of lights having differentlighting capabilities and characteristics using modular components. Asexplained above, the baffle 46 includes removable baffle members 112 foruncovering the intermediate and/or upper light portions of the shroudwindow when additional LED modules are used. Referring to FIGS. 9-15, asecond embodiment of a light assembly 222A, including additional LEDmodules 42, is indicated generally by the reference number 110. Likeparts are indicated by the same reference numbers. The light assembly222A includes a heat sink 241, the baffle 46, and multiple LED lightmodules 42, 44. In this embodiment the heat sink 241 comprises a heatsink assembly, and the heat sink assembly includes a heat sink base 40having the same construction as the heat sink 40 of the light assembly22A described above. The baffle 46 has the same construction as thebaffle 46 described above, except the removable baffle members 112 havebeen removed by breaking the frangible connecting links 114. Thedirectional LED modules 42 have the same construction as the directionalLED module 42 described above. Desirably, the LEDs 80 of all of themodules 42 emit light of the same color. The greater number of LEDs 80provides greater overall light intensity.

Referring to FIGS. 12 and 13, the heat sink assembly 241 includes thebase heat sink 40 and first (lower) and second (upper) heat sink modules245 stacked on the base heat sink. The heat sink modules 245 are modularin the sense that they have the same construction. The modules 245 eachinclude first and second columns 247 and a bridge 249 extending betweenthe columns. The columns 247 have feet for supporting the modules. Thefeet of the first (lower) heat sink module 245 support the module onheads of the columns 247 of the base heat sink 40. The feet of thesecond (upper) heat sink module 245 support the module on heads of thecolumns 247 of the first heat sink module 245. LED module mountingsurfaces 250 (FIG. 13) are provided on the top of the bridges 249 formounting the additional LED modules 42. The LED module mounting surfaces250 of the heat sink modules have the same configuration as the LEDmodule mounting surface 50 of the heat sink described above. Forexample, the LED module mounting surfaces 250 are inclined and includeopenings 270, 271 for mounting the LED modules 42 thereon. The heat sinkmodules 245 are configured to straddle an LED module 42 immediatelybelow the heat sink modules. In other words, the heat sink modules 245are configured to provide a space under the bridge 249 and between thecolumns 247 sized to permit an LED module 245 to be mounted on the LEDmounting surface 250 below the heat sink module 245. The arrangement issuch that any number of heat sink modules 245 could be stacked to permitmounting of a corresponding number of LED modules 42 on the heat sinkassembly 241. In the illustrated embodiment, the height of the heat sink241 and number of LED modules 42 is limited by the height of the baffle46 and the cover 30. It will be appreciated that the top andintermediate LED modules 42 mounted on the heat sink assembly 241 arepositioned for emitting light through the top and intermediate portionsof the baffle window opened by removing the removable baffle members112.

As shown in FIG. 13, the heat sink modules 245 include fastener passages269 extending generally vertically through the columns 247 from theheads to the feet of the columns to permit a fastener 273 (FIG. 13) tosecure the heat sink modules 245 to the base heat sink 40. Although thefastener passages 269 in only one side of the heat sink 241 are shown,it will be understood that similar heat sink passages are provided inthe other side along with a corresponding fastener. In the illustratedembodiment, the fastener 273 is provided in the form of a screw or boltthat forms a threaded connection with the fastener openings 68 in thebase heat sink 40. The fastener passages 269 in the heat sink moduleshave shoulders 275 for engagement with a head of the fastener 273. Inthe illustrated embodiment, the head of the fastener 273 engages theshoulder 275 of the top heat sink module 245 for securing the heat sinkmodules in stacked relationship against the base heat sink 40. It willbe appreciated that, if desired, the top heat sink module 245 and topLED module 42 could be omitted, in which case the top baffle member 112would not be removed, and a shorter heat sink assembly fastener 273would be used, such that a head of the fastener would engage theshoulder 275 of the first (lower) heat sink module 245 when a threadedconnection is made with the fastener opening 68 in the base heat sink40.

It will be appreciated that the light assemblies 22A, 222A can beprovided as the front and/or rear light assembly of an airfield light.For example, if greater intensity is desired for the forward or rearlight assembly, the light assembly 222A shown in FIGS. 9-10 (threedirectional LED modules 42) could be used, and if less intensity isdesired for the forward or rear light assembly, the light assembly 22Ashown in FIGS. 3-4 (one directional LED module 42) could be used. Ifmedium intensity is desired, the discussed variation of the lightassembly having two directional LED modules 42 could be used. Given themodular nature of the LED modules 42 and heat sink modules 245, and theremovable baffle members 112 of the baffle 46, several combinations canbe made, to provide the desired light intensity facing in the first andsecond directions.

Now referring to FIGS. 14 and 15, the light assembly 222A and platform34 are configured to permit aiming of the light assembly 222A. Morespecifically, the light assembly 222A can be aimed directly in the firstor second direction or to the left or right of the first or seconddirections. The platform 34 defines two mounts 301 on which the lightassemblies 22A, 222A, 22B are mountable. Each mount 301 includes a firstcentral opening 303 for receiving the protrusion 66 on the bottom of theheat sink base 40. The mounts 301 also include second openings 305 forreceiving optional fasteners 307 (FIG. 9) received in the openings 64 inthe front flange 60 of the heat sink base 40. In the illustratedembodiment, the openings 64 in the front flange 60 are slots (see FIG.9), such that the heat sink base 40 can be pivoted about an axis definedby the protrusion 66, and the slots 64 align with the openings 305 inthe platform within a range of pivoting movement of the heat sink base40. Finally, the mount includes two sets of three openings 309 forreceiving the protrusions 128 extending downward from the feet 126 ofthe baffle 46. In an alternate design, dowel pins could be used in placeof the protrusions 128. When the protrusions 128 are received in theopenings 62 of the left and right heat sink flanges 58, the protrusionsprotrude below the heat sink for reception in a selected one of theopenings 309. For example, the openings 309 may be spaced from eachother along an arc and be equidistant from the pivot axis defined by theprotrusion 66 or equidistant from the central opening 303. When the heatsink base 40 faces directly forward, the intermediate openings 309 ofeach series are aligned with the openings 62 of the left and right heatsink flanges 58 for reception of the baffle protrusions 128. When theheat sink base 40 is turned slightly to the left (e.g., in the inclusiverange from about 1 to 10 degrees, or from about 1 to 5 degrees, such asabout 1 degree) the rear opening 309 of the left series is aligned withthe opening 62 of the left heat sink flange 58, and the front opening309 of the right series is aligned with the opening 62 of the right heatsink flange 58, for receiving the baffle protrusions 128. Thus themounting of the light assembly 222A on the platform 34 permits aiming ororienting of the light assembly in a selected direction. In FIG. 15, thelight assembly 222A is shown mounted on the platform 34 such that thelight assembly is aimed slightly to the left. The rear light assemblycould be aimed similarly slightly to the left, or could be aimeddirectly rearward or slightly to the right. It will be appreciated thatthe heat sink 40 and baffle 46 of the first embodiment of the lightassembly 22A permits the same aiming capability in mounting the lightassembly on the platform 34.

Referring now to FIGS. 16-18, a light assembly of a third embodiment isindicated generally by the reference number 22B. As explained above,this light assembly 22B is shown as the rear light assembly of the light10 in FIGS. 1 and 2. This light assembly 22B is similar to the lightassemblies 22A, 222A and like parts are indicated by the same referencenumbers. For example, the light assembly 22B includes a heat sink 241, abaffle 346, and multiple LED modules 42. In this embodiment, the heatsink assembly 241 includes the heat sink base 40 and only one heat sinkmodule 245. Two directional LED modules 42 are provided and no halo LEDmodules. The baffle 346 has a similar but different construction thanthe baffle 46 discussed above. The baffle 346 includes a shroud 310 anda removable baffle member 312. As shown in FIG. 17, the baffle member312 includes a baffle element 316 forming a curved hood over the top ofthe upper LED module 42. The baffle 346 includes legs 320 extendingdownward from the shroud 310 and arms 322 extending laterally inwardfrom the legs having fastener openings 324 for optionally receivingfasteners for securing the baffle to the heat sink assembly 241. In thisembodiment, the removable baffle member 312 is not connected to theshroud 310 by a frangible connection. Instead, the removable bafflemember 312 is mounted on the shroud 310 by a releasable snap connectionand can be mounted on the shroud at predetermined elevations. The shroud310 includes mounting structure in the form of rectangular openings 331at left and right sides of the top and intermediate portions of theshroud window. The removable baffle member 312 includes mountingstructure in the form of releasable catches 333 extending rearward fromleft and right sides of the rear surface of the main body of the bafflemember. Each catch 333 includes an arm 333A and a retainer 333Bextending laterally inward from the arm. The retainer has a rampedsurface facing inward such that as the catches 333 are pushed into theopenings 331 in the shroud 310, the arms 333A temporarily deflectoutwardly until the retainers 333B pass through the shroud openings, atwhich point the arms resiliently snap back and the retainers maintainthe removable baffle member 312 on the shroud 310 by engagement of theretainers with a rear surface of the shroud adjacent the openings 331.Thus, the removable retainer 312 forms a snap connection with the shroud310 for mounting the removable retainer on the shroud. The snapconnection can be releasable (e.g., by deflecting the arms 333A todisengage the retainers 333B) such as by deflecting the arms todisengage the retainers to permit removal of the catches from theshroud. The snap connection can be referred to as a fastening of thebaffle member 312 to the shroud 310 or a mating connection of the bafflemember with the shroud. The baffle member 312 can be formed of the samecolor plastic as the shroud 310 (e.g., the same color as the LEDs 80 areconfigured to emit). It will be appreciated that two baffle members 312can be provided for closing the upper and intermediate portions of thebaffle window if it is desired to provide only the lower directional LEDmodule 42. On the other hand, no baffle members 312 may be used if it isdesired to use three directional LED modules 42 with the upper,intermediate, and lower portions of the baffle window open.

Modifications and variations of the disclosed embodiments are possiblewithout departing from the scope of the invention defined in theappended claims.

When introducing elements of the present invention or the embodiment(s)thereof, the articles “a”, “an”, “the” and “said” are intended to meanthat there are one or more of the elements. The terms “comprising”,“including” and “having” are intended to be inclusive and mean thatthere may be additional elements other than the listed elements.

As various changes could be made in the above constructions, products,and methods without departing from the scope of the invention, it isintended that all matter contained in the above description and shown inthe accompanying drawings shall be interpreted as illustrative and notin a limiting sense.

What is claimed is:
 1. An airfield light comprising: a support; a firstlight source connected to the support; and a baffle proximate the firstlight source, the baffle including a generally opaque baffle bodydefining a window having a first open portion through which lightemitted from the first light source may pass, and a generally opaquebaffle member secured to the baffle body and blocking a closed portionof window to inhibit light emitted from the first light source frompassing therethrough, wherein the generally opaque baffle member isremovable from the baffle body to create a second open portion of thewindow.
 2. An airfield light as set forth in claim 1, wherein the bafflefurther includes a second generally opaque baffle member secured to thebaffle body and blocking a second closed portion of window to inhibitlight emitted from the first light source from passing therethrough,wherein the second generally opaque baffle member is removable from thebaffle body to create a third open portion of the window.
 3. An airfieldlight as set forth in claim 1, wherein the baffle further includes agenerally opaque partition positioned above the light source to blocklight emitted from the first light source.
 4. An airfield light as setforth in claim 3, wherein the partition is secured to the baffle memberadjacent the first open portion of the window and is removable from thebaffle member.
 5. An airfield light as set forth in claim 1, furthercomprising a generally light-transmissible cover surrounding the firstlight source and the baffle such that the light emitted by the firstlight source through the first open portion of the window passes throughthe cover.
 6. An airfield light as set forth in claim 5, wherein thebaffle is sized and shaped to be in a close fitting relationship with aportion of the cover.
 7. An airfield light as set forth in claim 6,wherein the baffle is sized and shaped to fill a front portion of thecover to inhibit light emitted by the first light source from entering aback portion of the cover.
 8. An airfield light as set forth in claim 1,wherein the support is a first support and the baffle is a first baffle,the airfield light further comprising: a second support; a second lightsource connected to the second support; and a second baffle proximatethe second light source, the second baffle including a generally opaquebaffle body defining a window having a first open portion through whichlight emitted from the second light source may pass, and a generallyopaque baffle member secured to the baffle body and blocking a closedportion of window to inhibit light emitted from the second light sourcefrom passing therethrough, wherein the generally opaque baffle member isremovable from the baffle body to create a second open portion of thewindow.
 9. An airfield light as set forth in claim 8, wherein the lightemitted from the first light source is directed in a first direction,the light emitted from the second light source is directed in a seconddirection, the first and second directions being generally opposite ofone another.
 10. An airfield light as set forth in claim 9, wherein thefirst baffle inhibits light emitted by the first light source fromtraveling in the second direction, wherein the second baffle inhibitslight emitted by the second light source from traveling in the firstdirection.
 11. An airfield light as set forth in claim 8, wherein afirst baffle color of the first baffle and a first light color of thelight emitted by the first light source are generally the same, whereina second baffle color of the second baffle and a second light color ofthe light emitted by the second light source are generally the same,wherein the first baffle color and first light color are different thanthe second baffle color and second light color.
 12. A method ofassembling an airfield light, the method comprising: mounting first andsecond light assemblies on a support; removing at least a firstgenerally opaque baffle member from a baffle body of a baffle; arrangingthe baffle to shroud the first and second light assemblies, the firstand second light assemblies configured to emit light through a windowdefined by the baffle, the second light assembly configured to emitlight through a portion of the window opened by removing the firstgenerally opaque baffle member from the baffle body.
 13. A method as setforth in claim 12, further comprising mounting a third light assembly onthe support and removing a second generally opaque baffle member fromthe baffle body, the third light assembly being configured to emit lightthrough a portion of the window opened by removing the second generallyopaque baffle member.
 14. A method as set forth in claim 13, furthercomprising: mounting third and fourth light assemblies on a secondsupport; removing at least a first generally opaque baffle member from abaffle body of a second baffle; arranging the second baffle to shroudthe third and fourth light assemblies, the third and fourth lightassemblies configured to emit light through a window defined by thesecond baffle, the fourth light assembly configured to emit lightthrough a portion of the window opened by removing the first generallyopaque baffle member from the baffle body of the second baffle;arranging the second support and second baffle with respect to thesupport and the baffle such that the light emitted from the first lightsource is emitted in a first direction, the light emitted from thesecond light source is emitted in a second direction, the first andsecond directions being generally opposite of one another.
 15. A bafflefor an airfield light, the baffle comprising: a generally opaque shrouddefining a window; and a first generally opaque baffle member secured tothe shroud, the first generally opaque baffle member closing a firstportion of the window, the first generally opaque baffle member beingremovable from the shroud for opening the first portion of the window.16. A baffle as set forth in claim 15, wherein the first generallyopaque baffle member is secured to the generally opaque shroud by atleast one frangible connecting link.
 17. A baffle as set forth in claim15, wherein the first generally opaque baffle member is formedseparately from the shroud and is fastened to the shroud for securingthe generally opaque baffle member to the shroud.
 18. A baffle as setforth in claim 17, wherein the first generally opaque baffle member isfastened to the shroud by a snap-fit connection.
 19. A baffle as setforth in claim 15, further comprising a generally opaque partitionextending from the first generally opaque baffle member and configuredto be positioned above the light source to block light emitted from thefirst light source.
 20. A baffle as set forth in claim 15, furthercomprising a second generally opaque baffle member secured to thegenerally opaque shroud, the second generally opaque baffle memberclosing a second portion of the window, the second generally opaquebaffle member being removable from the generally opaque shroud foropening the second portion of the window.